Greater sialomucin expression in benign salivary gland tumours compared to the malignant ones suggests a possible role of sialomucin or sialomucin-producing cells in the malignant progression of salivary gland neoplasms, correlating well with many of the reported roles of mucin in growth and development of tumour cells. Here, MUC5AC is linked to salivary gland neoplasm.